//
//  StatusCell.swift
//  SinaWeibo
//
//  Created by mac on 15/12/20.
//  Copyright © 2015年 mac. All rights reserved.
//

import UIKit
import SnapKit
class StatusCell: UITableViewCell {
    //定义微博模型属性
    //底部视图的顶部约束 
    var bottomViewTopConstraints : Constraint?
    var status:Status? {
        didSet {
           //给顶部视图 设置模型数据
            topView.status = status
           // retweetedView.retweedStatus = status?.retweeted_ststus
           
          //卸载掉顶部约束 
            bottomViewTopConstraints?.uninstall()
            //需要根据树模型 提供的数据 判断是否显示转发微博视图
            if let retweetedStatus = status?.retweeted_ststus {
                //一定是转发微博  
                //修改约束
                bottomView.snp_updateConstraints(closure: { (make) -> Void in
                    self.bottomViewTopConstraints = make.top.equalTo(retweetedView.snp_bottom).constraint
                     })
                    //设置转发微博的数据源 
                    retweetedView.retweedStatus = retweetedStatus
                    //显示转发微博 
                    retweetedView.hidden = false
               
            
            }else {
                //一定是原创微博 
                bottomView.snp_updateConstraints(closure:{ (make) ->Void in
                    self.bottomViewTopConstraints = make.top.equalTo(topView.snp_bottom).constraint
                    
                    })
   //隐藏转发微博 
                    retweetedView.hidden = true
                    
              
                }
            
            
        }
    }
    
    
    
    
   //自定义 cell 的入口
    override init(style: UITableViewCellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        
        setupUI()
        //设置 cell 选中的样式 
        selectionStyle = .None
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    
    private func setupUI() {
        
        //使用 contentView 添加子视图 
        contentView.addSubview(topView)
        contentView.addSubview(bottomView)
        contentView.addSubview(retweetedView)
        //设置约束 
        topView.snp_makeConstraints { (make) -> Void in
//            make.top.equalTo(contentView.snp_top)
//            make.left.equalTo(contentView.snp_left)
            make.top.left.right.equalTo(contentView)
            //设置高度
          //  make.height.equalTo(50)
            
        }
        bottomView.snp_makeConstraints { (make) -> Void in
            make.left.right.equalTo(self)
         //   make.top.equalTo(retweetedView.snp_bottom)
            self.bottomViewTopConstraints = make.top.equalTo(retweetedView.snp_bottom).constraint
            make.height.equalTo(40)
        }
        //设置转发微博的约束 
        retweetedView.snp_makeConstraints { (make) -> Void in
            make.left.right.equalTo(contentView)
            make.top.equalTo(topView.snp_bottom)
           // make.height.equalTo(50)
        }
        
        
        
        //给 contenView设置约束  非常关键 
        contentView.snp_makeConstraints { (make) -> Void in
            make.top.left.right.equalTo(self)
            make.bottom.equalTo(bottomView.snp_bottom)
        }
    }
    //懒加载子视图
    //顶部视图
    private lazy var topView:StatusCellTopView = StatusCellTopView()
    //转发微博 
    private lazy var retweetedView:StatusRetweetedView = StatusRetweetedView()
    //底部视图
    private lazy var bottomView:StatusCellBottomView = StatusCellBottomView()
    
    
}
